Southwest light-rail construction work uses Japanese equipment for silent and smooth tunneling
Minneapolis' $2 billion Southwest light-rail construction work uses Japanese equipment pressing (as opposed to pounding or vibrating) vertical steel sheet piles into the ground to create an interlocking wall that will serve as the framework for the concrete tunnel. They are doing it so to min...Tags: Japan, Japan tunneling
cover tunnel photo by: Matt Brown from London, England / CC BY
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